Focusing-hood for cameras.



W. P. POLMER.

v PooUsING Hoon PoR CAMERAS.

' APPLICATION FILED SEPT.14, 1910,

Patentd May 6; 1913.'-

2 SHEETS-SHEET 1.

W F. POLMER.

FOGUSINGHOOD FOR CAMERAS.v I

- y APPLICATION FILED SEPT. 14, 1910. l' 1,060,834 y Patented May 6,1913.

Z BHB-ETS-SEEET 2.

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l7 O 50 13 O 7 "UNITED sTATEs -PATENT OFFICE.

y WILLIAM F. FOLMER, or ROCHESTER, NEW YORK, AssIGNoR To EASTMANKODAK oo., or ROCHESTER, NEW YORK,

.A CORPORATION OF NEW YORK.

Focusrite-Hoon RoR CAMERAS.

Specification of Letters Patent.

Patented May e, i913.

original application atea Maren 26, 190e, serial No. 485,912. Dividedand this application ined september 14,1910. seriaino. 581,981.

To all whom t may concern: 'rBe it known that'I, VILEIAM F. FoLMER, ofRochester, in the county of Monroe and State of New York, have inventedcertain new and useful Improvements in Focusing- Hoods' for Cameras; andI do hereby deV clare the following to be a full, clear, and

' exact description of the same, reference 'being had to theaccompanying drawings, forming a part of this specification, andto thereferencenumerals marked thereon.

My Ypresent invention relates -to photography and it has for its objectto provide a simple, neat and eiiicient focusing hood for use inconnection with' cameras or ot-her.in 4 struments embodyingA focusingscreens, the

I improvementsbeing directed more particuvidey a construction which willLbe light and the specification.'

'or operative position.-

larly toward' the means employed for supportin-g a collapsible hoodinitsextended Another object of the invention is to procompact kand yetlstrong and durable.

To these and other ends the invention consists in certain improvementsand combinations of parts all as willV be hereinafter morefullydescribed, the novelfe'atures being pointed out in the claims lat theend of `ln the drawings: Figure 1. isa side 'eleva-A tion of a camerayprovided with a focusing hood "constructed in accordance with andillustrating one embodiment offmy inven-f tlon, parts of the camerabodybeing broken away to` clearly illustrate the hood.; Fig. 2

a front-elevation of the hood detached Y Tand in extended position; Fig.3 a bottom plan vView of the hood with the collapsible bellows detached;Fig, l4 is an end 'elevation' of .the same parts in collapsed position,and Fig. 5l is a side .view of the complete hood collapsed.

Similar-1' reference numerals 4throughout l the'l several figuresindicate the same" parts.

upon which the .image cast by the lens is reflected by av suitable means(not shown);

In conjunction-with the focusing screen, I provide a focusing hood, thebody of wh1ch is constructed, in the present instance, of\

`opposite outer and inner frame. pieces 4 and 5 connected by anintermediate collapsible bellows 6. The lower.' or inner frame piece 5is supported. upon stirrup straps or hangers 7 that, in the presentinstance, are formed integral with each other from a\ plate 7a in. pairson opposite sides of' the frame and connected in spaced relationship tothe adjacent side of the latter in each instance by studs'7b. Thehangers engage over the edges ofthe walls of the focusing well 2 andposition the hood therein above the ground glass 3 but render the hood.a separate and, if desired, detachable unit. The opposite end frames4and 5 are connected for relative movement in a manner permitting thehood to be collapsed or folded within the focusing well beneath asuitable cover 8 therefor, or supported rigidlyin an extended positionby means of a system of pivoted levers 9 that, in the pres; entinstance, and because of-the length of hood, constitutea lazy-tongs, thefree enti@l members having slot and pin connecytiq's 10 with the framepieces. In the'present instance the s lots mentioned are formed in:the-hanger plates 7F of the frame, and the adjacentends of the levers 9pass. between `"said p latesand-the'frame proper.

To lock the lazy-tongs i extended position and support the hoodfor use,asshownin F ige 2, there is fixed to one of the frames a yielding. orresilient extension` 1 1 which may be formed integrally with the.hangers f7,`as shown and which'has slot l12 therein terminating inacommunicating recess 13';-

A p in or projection14, preferably formed byan extension oftheintermediate pivot pin of the adjafyit -levers of the system,"

operates in .the slot as .the tongs and bellows are worked back andforth and the slot is arranged to extend singularly to the natural pathof movement 'of the pin 14 so that, when the hood is fully extended, thepin will, by reason of theyielding character of the part 11, snap in tothe recess 13 and lock the levers against return movement until suiii-Acientdownward pressure exerted by the 'operator upon the hood or tongsdeiiects the member l1 and releases the pin. As the slotl l2 shouldpreferably beas low down in the focusing Well 2 as possible in orderthatthe member 11, though long enough to cover the range of movement ofthe lever pivot,

may not project unduly,'the pivot pin 14 is preferably arranged upon anofi'set portion l5 on the levers. By these arrangements the hood iscollapsed Within the exceedingly limited compass shown by Fig. 3, aneyefpiece 16 at the upper end of the hood being of a hinged and foldablecharacter permit` ting it to be disposed in the extended posiy thelatters construction in the manner described.`

I claim as my invention: l

" -1. The combination with Ia focusing hood for cameras comprisingrelatively movable end portions and a. collapsible intermediate portion,of a plurality of p ivoted 'levers conn`ecting said end portions tosupport them in separated positions and locking means for the leverscomprising a relatively yielding slotted element and a coperating pinvon one of the levers and one of the end portions,

respectively, said slotted element being provided With a'recesscommunicating with the slot within which recess the pin is adapted tospring.

2. The combination With a focusing hood for cameras comprisingrelatively movablev end portions anda collapsible intermediate portion,and a plurality of pivoted levers connecting said end' portions tosupport y them in separated positions, of a fixedbut resilient element0n one .of the end portions having a slot therein inclined tothedirection of relative movement of the parts, said slot being formed Witha communicating recessI and a pin carried With the levers in co`-operation with the slot and adapted to automatically engage Within therecess.

3. The combination Witha focusing hood for cameras comprisingrelativelymovable end portions and a collapsible intermediate portion, of a pairof levers movahly connected With the end portions at their eX--tremities and pivoted to each other at inter- -mediate points tosupport the end portions in separated positions, a resilientelementhaving a fixed position onon'e of the latter provided With a slot andwith a'rccess communicating therewith and an extension on the pivotconnecting the levers arranged to travel in the slot and engage therecess, the slot being inclined relatively to the ypath of movement oflsaid pivot When theend-portions are moved apart.

WILLAM- FJ EOLMER. Witnesses: x RUSSELL B. GRIFFITH,..

NELSON Corr. y I

